1、MIL-T-9219 (US1,F) 16 Septemberl9z Superseding NO, 32uO-B 31 March 1949 NILITARY SPECIFICATION TRANSFORMERS, PG4ERI AUTOTRANSFORMERS AND STEP DOWN, 400 CYCU 1. SCOPE 1.1 This specification covers 2 classes of transfomers for aircraft 400-cyole sys tems : Class Class I - Autotransformer, single phase
2、 I - Transformer, 3 phase 2 issue in effect on %he date of invitation for bids, form a part of this specification the extent specified herein: APPLICABLE SPECIFICATIOIJC, STANDARIIG, AND PUBLICATIONS 2.1 The following specifications, standards, and publication, of the SPUCIFICATIONS MILITARY MI L-D-
3、502 8 Drawings and Data Lists; Preparation of (For Engines, Accessories and Other Auxiliary Equipment) Environmental Testing, Aeronautical and Associated Equipmeht, General Specification For Packaging of Lightweight Aircraft Accessories Screw Threeds; Standard, Aeronautical MIL-E-52 7 2 MIL-P-6064 M
4、ILS-77 42 IIIILIT AFtY ML-CTO-129 Marking of Shipment8 MI LSTD-130 Identification Marking of U, S, 14ilitary Property PUBLICATION AIR .FORCE-NAVY AERONAUTICAL BUUTM il$ Specifications and Stmdards; Use of (Coptes of spedfications, standards, and publications requlred by contractors in connection wit
5、h specific procurement fnctiona should be obtained fran the procuring agency or as directed by the contracting officer.) 7 /- THIS DOCUMENT CONTAINS I 1 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3. REQUIREMENTS 3.1 Material: 3.1.1 Specif
6、ications and standads,- Specifications and standards for all materlala, parta, and Bovernment eert 4.4.2.1 Vhen sampling tests are epecified on a number of items that are selected from a production run and one or more of this nuiber foile to meet the specified tests, acceptance of all item still on
7、hand and subsequent production rill be withheld UtIl the extent and cause of failure Is determined. panding investigation sf a sqlirng test failure. Holever, final acceptance of the items on hand and subsequent production is contingent upon the inspectora decision regarding the overall conformance o
8、f the product to specification requireaente . all, necessary tests shell be r9eated. If investigation inciicates that the defects mag exist in items previously accepted, fill partieulara concerning the ddctsj includifig recommendations for correction, rill be furnished to the contracting officer. Fo
9、r operational reasons, individual tests may be continued When corrective action hm been accomplished, 4.4.2.2 Veltnge reguo1tion.- The voltage regualtion shall be meaeured after the transformer has reached a constant temperature at rated kilovolt- ampere load. The voltage regualtion shall not exceed
10、 the voltage regulatloP requiremants specifled fn Section 3. a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - MIL-T-7217 59 7777906 0012678 5 4.4.2.3 Efficiency.- The efficiency shall be measured efter the tram- former has reached a constant tmpe
11、rature at rated kilovolt-ampere load. efficiency shall not be less than the efficiency requirement specified in Section 3. The l1h.2.b Temperature rise.= The temperature rise of the windings shall be measured by the resistance method with the transformer mounted on a suifable asbestos board. The max
12、imum temperature rise thus measured shall not exceed 200.C above an ambient tenperature of 25.C. b.5 All parts, specimens, or assemblies destroyed in making teste required by this specification or drawinqs, to determine compliance with the specification or drawings, shall be in addition to the quaat
13、ity specified in the contract or piirchase order and shdl be furnished without increasing the cost of the contract or order, 5. PREPARATION FOR DELIVERY 5.1 General. - The packaging, packing, and markhg requirements specified 5.2 The transfnnner shall be packaged in accordance with Group II of herei
14、n apply only to direct purehases by, or diroct, shipments to the Oovement Specification 1iVp-6064 in a Type II, Class I container. 5.3 Naricine. of shipments.- Interior packages and exterior shipping containers shall be marked in accordance with Standard HIL-STD-129, nomenclature shall be as follows
15、: The Transformer, Power, it Autotransformer I1orn it Step Down, Specification MfL-T+?219 Ifr1s. Part No. +kAppUcable data shall be entered by the contractor. 4 Cycle, it mnput and Outputo - * -Single “or“ Three 6, NOTES in Loo-cycle ac power systems for aircraft. 6.1. Tha tramformers covered by thi
16、s specification are intended for use 6.2 Definitions: 6.2.1 Transfomer.= The word Rtran$fonaerfl shall be eonrtnred as covering transf orner or autotransf omerir Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-* U. S. GOVERNMENT PRINTING OFFICE; 1969-393.063/5.720 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
